your child is directly correlated to your child’s intelligence

You find out that reading to your child is directly correlated to your child’s intelligence. So how much time is everyone else reading to their babies? Your research reveals that the amount of time parents read to their babies per day is normally distributed with a mean of 50 minutes and a standard deviation of 10 minutes. Calculate the minimum amount of time you need to read to your baby to be in the top 5% of times parents read to their babies